Audis like to rev high, and if you haven't installed an Audi cold air intake on your German performance car, you're missing the high notes your engine can sing. An Audi cold air intake does exactly what its name suggests: The Audi cold air intake allows the engine to ingest cooler air from outside the engine compartment. Take a step back to high school physics, and you'll remember that cooler air is denser than warmer air. Denser air means you can get more into the cylinders, so an Audi cold air intake means more air for combustion. Power is the result from your Audi cold air intake, and power is something we all can use more of. But before you pull the duct off the dryer and stuff it in your engine bay, you should know that there's a lot of engineering that goes in to an Audi cold air intake. Everything from the air filter to the tubing diameter makes a difference in how efficiently that Audi A4 cold air intake, Audi A6 cold air intake, or Audi TT cold air intake works. You need an Audi cold air intake designed specifically for your ride of choice, and you can find it here for less. Ditch your stock airbox and air filter, and bolt on one of our Audi cold air intake systems today. You'll save money buying your Audi cold air intake from us, and once you feel the difference in performance, you'll be wishing you'd installed an Audi cold air intake ages ago.